Question 163: Semiconductors and Logic Gates

Question

An experiment is performed to determine the I - V characteristics of a Zener diode, which has a protective resistance of R = 100 $$\Omega $$, and a maximum power of dissipation rating of 1 W. The minimum voltage range of the DC source in the circuit is :

Accepted Answer

Potential drop accross zener diode.
V
z
= V $$-$$ 100 I
$$ 	herefore $$   Power dissiption = V
z
I
= (V $$-$$ 100 I) I
Given that,
(V $$-$$ 100 I) I = 1
$$ \Rightarrow $$   VI $$-$$ 100 I
2
= 1
$$ \Rightarrow $$   100 I
2
$$-$$ VI + 1 = 0
As   As I is real,
So, b
2
$$-$$ 4ac $$ \ge $$ far this quadratic equation.
$$ 	herefore $$   V
2
$$-$$ 4(100)1  $$ \ge $$ 0
$$ \Rightarrow $$   V $$ \ge $$ 20 V
$$ 	herefore $$   Voltage range should be 0 $$-$$ 24 V

Answer

0 $$-$$ 5 V

Answer

0 $$-$$ 8 V

Answer

0 $$-$$ 12 V

Answer

0 $$-$$ 24 V

Semiconductors and Logic Gates

An experiment is performed to determine the I - V characteristics of a Zener diode, which has a protective resistance of R = 100 $\Omega $, and a maximum power of dissipation rating of 1 W. The minimum voltage range of the DC source in the circuit is :

Choose the correct answer: